I have never seen any special hangers except Universal. This looks to
be just a rebent standard rear hanger.
Yes the cranks are interesting . I belIEve this bike is EX CBS he
originally bought it from someone who brought it into the Missing Link
in Berk when he worked there.
Spence sold a friend an MKM in 1965 with these cranks as a tripple
touring set up. I had never seen them with the set up this bike has plus
50/47 gearing
BOB
FREITAS
MILL VALLEY,CA USA